Quantitative failure consequence hazard assessment for next … · 2010-09-29 · Quantitative...

Quantitative failure consequence hazard assessment for next generation CO2

pipelines

H. Mahgerefteh

Chemical Engineering, University College London

http://www.co2pipehaz.eu/

UK CCS Community Network Meeting

14-15 September 2010

University of Leeds

© University College London

215 September 2010 CO2PipeHaz - UK CCS Community Network Meeting


CO2PipeHaz

Start Date: 2009-12-01

Duration: 36 months

Participants:

• UCL (UK)

• GEXCON (NORWAY )

• HEALTH AND SAFETY EXECUTIVE (UK)

• DALIAN UNIVERSITY OF TECHNOLOGY (CHINA)

• INSTITUT NATIONAL DE L ENVIRONNEMENT ET DES RISQUES INERIS (FRANCE)

• NATIONAL CENTER FOR SCIENTIFIC RESEARCH "DEMOKRITOS" (GREECE)

• UNIVERSITY OF LEEDS (UK)



Introduction

• Pressurised pipelines are considered to be the most likely method for transportation of CO2 captured from fossil fuel power plant for subsequent sequestration

• Given the enormous amounts of CO2 contained in such pipelines (typically several thousand tonnes), their safe operation is of paramount importance

• CO2 is an asphyxiant and is likely to be fatal at concentrations greater 10% v/v.



‘Without a clear understanding of the hazards

associated with the failure of CO2 pipelines, CCS

can not be considered as a viable proposition for tackling the effects of global warming.

The CO2PipeHaz project deals with this missing link’.



5

Model of CO2 release during pipeline failure



Project Partners

INERIS (France)

Dr Ch. Proust

National Research

Centre for Physical

Sciences (Greece)

Prof. I. Economu,

Dr D. Tsangaris

University of Leeds

(UK)

Prof. M. Fairweather,

Prof. S. Falle

University College London,

(UK) Prof. H. Mahgerefteh

Dalian University of

Technology (China)

Prof. Y. Zhang

GEXCON (Norway)

Dr A. Milheim, Mr M.

Ichard, Mr I. Strovik, Mr

O.J. Taraldset, Mr T. Skjold

Health and Safety

Laboratory (UK) Dr L.

Cusco, Dr M. Wardman, Dr

S Gant, CEng J. Wilday



Project Work Packages



WP1: Accidental Discharge Phenomena

1. Define likely CO2 composition based on

safety, environmental and cost benefit

analysis




2. Develop mathematical algorithms in conjunction

with suitable equations of state based on statistical

mechanics for CO2 and its impurities covering super-

critical to triple point regions.




3. Develop a computationally efficient multi-

phase heterogeneous outflow model for the

accurate prediction of the time variant release

rate and the physical state of escaping CO2

following pipeline failure, based on a reliable

equation of state for CO2 and CO2 mixtures




4. Develop multi-state dispersion models for

predicting the subsequent concentration of the

released CO2 as a function of time and distance

from the release, both in terms of a detailed near

filed and far-field modelling capability.



WP2: Experimental Data and Validation

WP2.1:Controlled small/medium scale experiments

involving supercritical CO2 with impurities to determine:

1. the thermo-physical and thermodynamics data

required for the phase equilibrium model;

2. fluid flow pattern maps;

3. near-field solids particle size distribution and velocity

profiles for validating of the dispersion model;

4. investigate erosion impact and expansion cooling

effects of CO2



WP2: Experimental Data and Validation

WP 2.2 Industrial Scale Experimental

Investigation (DUT)

To conduct industrial scale validation tests

of theoretical models developed under

WP’s 1.3 -1.5







WP3: Decision Support Tools

1. Incorporate the predictive capabilities

developed in previous Work Packages,

as well as current knowledge and good

practice, into decision support tools.

2. Demonstrate the usefulness of tools

to identify potential hazards by

examining harm from vapour concentration and population density



The Project website



Contact details

Professor Haroun Mahgerefteh

Project Coordinator

University College London

Gower Street, London, United Kingdom

Tel: +44-2076793835

Fax: +44-2076793835

www.co2pipehaz.eu

Thank you

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